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LAURDIMONIUM HYDROXYPROPYL HYDROLYZED SOY PROTEIN

60

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A protein-quaternary hybrid conditioning agent combining a dodecyl (C12) chain with hydrolyzed soy protein and a hydroxypropyl cationic substituent.

Laurdimonium hydroxypropyl hydrolyzed soy protein is a hybrid ingredient where a lauryl (C12) quaternary ammonium is tethered to a hydrolyzed soy protein through a hydroxypropyl linker. The protein component enables substantive binding to damaged skin and hair via electrostatic and hydrophobic interactions. EU CosIng shows no specific restrictions for this ingredient class. Protein-quaternary hybrids are known to reduce static charge and improve manageability. The hydrolyzed soy component raises allergen concerns (soy protein fragments).

Skin benefits

  • Protein-based substantivity for damaged hair and skin
  • Film-forming protective action on skin and hair
  • Improvement of mechanical properties (strength, elasticity) of treated substrates

Known concerns

  • Soy protein allergen sensitivity in sensitized individuals
  • Residual protein fragments may trigger immune response in compromised skin
  • Mild skin and eye irritation possible
  • Limited regulatory safety data on protein-quaternary hybrid molecules

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.